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Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2566156295

Certificate GIA 2566156295

Diamond specifications and retailer prices

From $5,413 SGD
As of November 5, 2026
Save $4,388 SGD (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $9,801 SGD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566156295. Listed at 13 retailers as of November 5, 2026, with prices from $5,413 to $9,801, a $4,388 spread on the same certified stone. Wholesale Diamonds Direct lists it at $9,801. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.24°
Pavilion angle39.43°
OriginNatural
Grading LabGIA
CertificateGIA 2566156295
Dimensions8.95 × 6.42 × 3.96 mm
L/W Ratio1.39
Culet sizeNone
Top View
8.95 mm6.42 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2566156295
Side View
Table 60.0%Crown 40.24°Girdle: MED-THKPavilion 39.43°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,926 SGD|Low: $5,413 SGD|High: $10,967 SGD|Avg: $6,929 SGD|-8.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
November 6, 2026
Retailer 10$5,413 SGD
Retailer 7$5,567 SGD
Retailer 6$5,620 SGD
Retailer 8$5,716 SGD
Retailer 3$5,812 SGD
Retailer 4$5,833 SGD
Retailer 2$5,867 SGD
Retailer 5$6,021 SGD
Retailer 11$6,764 SGD
Retailer 12$6,780 SGD
Retailer 1$6,926 SGD
Retailer 9$9,067 SGD
Wholesale Diamonds Direct$9,801 SGD

33 data points across 13 retailers

13 retailers$5,413 SGD to $9,801 SGD

A
Cheapest Retailer
-
$5,413 SGD
A
Retailer 2
-
$5,567 SGD
View
A
Retailer 3
-
$5,620 SGD
View
A
Retailer 4
-
$5,716 SGD
View
A
Retailer 5
-
$5,812 SGD
View
A
Retailer 6
-
$5,833 SGD
View
A
Retailer 7
-
$5,867 SGD
View
A
Retailer 8
-
$6,021 SGD
View
A
Retailer 9
-
$6,764 SGD
View
A
Retailer 10
-
$6,780 SGD
View
A
Retailer 11
-
$6,926 SGD
View
B+
Retailer 12
-
$9,067 SGD
View
Most Expensive
B+
Wholesale Diamonds Direct
579393277 · Nov 6
$9,801 SGD
$7,648 USD
View
12 more retailers have this diamond
Prices start from $5,413 SGDSave up to $4,388 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Oval
$5,413 SGD